166562145 has 12 divisors (see below), whose sum is σ = 288707796. Its totient is φ = 88833120.

The previous prime is 166562087. The next prime is 166562161. The reversal of 166562145 is 541265661.

166562145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 146095569 = 4524^2 + 12087^2 .

It is not a de Polignac number, because 166562145 - 2¹⁴ = 166545761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1850646 + ... + 1850735.

It is an arithmetic number, because the mean of its divisors is an integer number (24058983).

Almost surely, 2^166562145 is an apocalyptic number.

166562145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166562145 is a deficient number, since it is larger than the sum of its proper divisors (122145651).

166562145 is a wasteful number, since it uses less digits than its factorization.

166562145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701392 (or 3701389 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 166562145 is about 12905.8957457435. The cubic root of 166562145 is about 550.2061431124.

The spelling of 166562145 in words is "one hundred sixty-six million, five hundred sixty-two thousand, one hundred forty-five".